Acknowledgement
본 논문은 2023년롯데건설(주)의 연구과제인 "바닥구조 동특성 분석 및 해석 기법 정립"의 일환으로 수행된 연구 결과임을 밝히며 이에 감사를 드립니다.
References
- 문대호. 공동주택의 바닥충격음 영향요인 분석. 서울대학교. 2015.
- 양홍석, 김태민. 공동주택 뜬바닥 구조층 구성에 따른 바닥충격음 차단성능 실험적 연구. 한국소음진동공학회논문집. 2020. 제30권 2호. p. 119-128.
A floating floor generally consists of mortar bed separated from the structural RC slab by a continuous resilient layer. It is known that the floating floors are a type of vibration-isolation system to improve the impact sound insulation performance. However, some researchers have demonstrated that the amplification of vibration response at a specific range of frequencies results in an increase in the impact sound level. This study carried out the forced vibration tests to obtain the frequency response function (FRF) of a floating floor compared with a bare RC slab. Test results shows that the additional peak occur in vibrational spectrum of the floating floor except natural vibration modes of the bare RC slab. This is because the relatively flexible resilient material and mass of the mortar bed offer an additional degree of freedom in the structural system. Therefore, it could be efficient for reduction of floor impact vibration and noise to control the additional mode frequency and response of floating floors.
본 논문은 2023년롯데건설(주)의 연구과제인 "바닥구조 동특성 분석 및 해석 기법 정립"의 일환으로 수행된 연구 결과임을 밝히며 이에 감사를 드립니다.